THE R SERIES
R Series offers a choice of three floorstanding speakers, a stand mount for more compact spaces and accompanying matching theatre models. Each one offers the finest sound KEF has ever delivered in its category whatever the dimensions of the room or system configuration.
R STARTS WITH REFERENCE
At KEF the Reference Series is the home of cutting-edge technological innovation. This is the result of diligent, creative research and development by the very best engineers in the business. The new R Series benefits from many of the technologies, materials and developments created for the Reference Series.
FEEL THE MUSIC
When you want to forget the world and simply lose yourself in sound, R Series will take you there. At KEF, the quest to develop perfect loudspeakers has lasted more than 50 years. Like you, we don’t just want to hear music; we want to experience it, get inside it and feel part of it.
SOUND IS THE REAL STORY
In the movie world, the best sound engineers are capable of weaving ever more wonderful sonic webs and the new R Series is your ticket for getting the best out of movies, delivering the natural, consistent sound essential for a phenomenal surround sound experience.
Beautiful by Design
Form follows function in KEF loudspeakers, so while the R Series is driven by acoustics all fixings are hidden, so all you see is a beautiful, clean exterior. The R Series comes in two sleek gloss finishes or a classic wood veneer and KEF’s tone-on-tone style means that the details are colour-matched to the finish.
The R Series was created to sound its best with or without grilles. The microfibre grille design is a first for KEF and not only looks beautiful but has a negligible effect on performance. They continue the tone-on-tone approach to match the various cabinet finishes and the edges are burnished for a suede-like effect.
TECHNOLOGY – THE SCIENCE OF SOUND
The evolution of KEF’s Uni-Q driver reaches its 12th generation in the R Series. Using simulation and analysis tools KEF’s engineers have been able to dramatically reduce colouration by cutting resonance in the tiny gaps between Uni-Q’s elements. The result is purer and more precise sound with stronger imaging.
The Shadow Flare is an innovative way to cut harmful high frequency cabinet diffraction. It’s a carefully profiled transition that extends the waveguide effect of Uni-Q. The treble escapes naturally because the ‘shadow region’ stops it getting to the cabinet edges. The result is vastly improved fine detail.
A solid platform is imperative for great sound. The new R Series benefits from Constrained layer damping. This system utilises internal braces joined by a ‘lossy’ interface and is highly effective at dissipating unwanted vibrations that would otherwise artificially change the sound and music.
Low Frequency Drivers
R Series bass drivers have a two-part structure with a shallow concave aluminium skin atop a paper cone. Combine this stiffness with the cone’s unique geometry and you get near pistonic movement for punch and speed. KEF has also increased linearity in the magnet system which means more impressive and impactful bass.
Flexible Port Technology
When it comes to generating deep, articulate bass, port design is crucial. The R Series ports have innovative flexible walls. Using computational fluid dynamics the flare and profile of each port is calculated to delay the onset of turbulence and the flexible port walls prevent resonances from colouring the midrange.
Twin 9-inch driver ‘force-cancelling’ subwoofer
KF92 is a compact, room-friendly subwoofer engineered to deepen every listening experience. Two massive 9-inch drivers in a force-cancelling configuration are powered by an immense 1000 Watts (RMS) of power. Optimised with KEF’s Music Integrity Engine™, KF92 delivers astonishing levels of deep and controlled bass.
DISCOVER THE DETAIL IN THE DEEP
To reproduce serious bass you need a completely different kind of loudspeaker, one which can cope with huge pressure. KF92 is engineered to blast out huge chunks of lower frequency energy, yet is subtle enough to pick out the delicate details of a double bass. KF92 ensures you don’t just feel the air move – you feel the sound move you.
Two 9-inch drivers are positioned back to back in a force-cancelling design which cancels out the reactive forces which stress conventional subwoofers. This configuration keeps KF92 perfectly balanced so all you’ll hear is deep and clean bass at sound pressure levels of upto 110db.
KF92’s prodigious drivers are optimised with a clever vented design which reduces viscous drag on the movement of the cone, ensuring they can keep up with even the most demanding impulses.
Two 9-inch KEF transducers were conceived specifically for the KF92. They feature a hybrid aluminium/paper cone and an oversized motor system and voice coil. They offer vanishingly low distortion and precision, so every bass moment is uncovered even when they are working at extremes.
Music Integrity Engine™
KEF’s research into digtal sound processing – Music Integrity Engine – is the brains behind KF92. Intelligent Bass Extension optimises the relationship between the amplifier, drivers and cabinet, while placement-dependant EQ allows for seamless integration into any room.
Turn up the power
KF92’s 1000W (RMS) of Class D amplification (500W RMS per driver) creates immense power., delivering incredible levels of control. This improves timing accuracy and dynamic response, producing a more detailed sound closer to that in the studio.
More bass, less space
The compact, sealed box construction improves flexibility of positioning as well as the speed and clarity of performance. The beautiful low profile heatsink ensures that the hard working electronics are kept in an optimum thermal condition.
THE WORLD’S FIRST 13.2 CHANNEL AV AMPLIFIER
The Denon Flagship AVC-X8500H powers the next generation of home theatre with the world’s first 13.2 channel AV Amplifier that supports the latest immersive audio formats, including Dolby Atmos® , DTS:X and Auro-3D. Built in HEOS technology that supports Amazon Alexa* also allows you to take your music listening experience to the next level, with support for your favourite music streaming services and voice control.
13.2 channel AV Amplifier with 210W per channel
210 watts per channel (6 ohms, 1 kHz, THD 1%, 1ch driven)
Monolithic amplifier design with Denon custom-made transistors
Supports Dolby Atmos (up to 7.1.6 or 9.1.4), DTS:X and Auro-3D (up to 13.1)
8x High-performance 192kHz/32bit stereo D/A converters for 13.2 channels
Audyssey MultEQ XT32, LFC, Sub EQ HT, Dynamic Volume and DynamicEQ
4K/60 Hz, 4:4:4 colour resolution, HDR, BT.2020, Dolby Vision and HLG P
8 HDMI inputs (including 1 front) with full HDCP 2.2 support and 3 HDMI outputs C
HEOS wireless music streaming technology and the HEOS app
AirPlay, Bluetooth, Internet Radio, Spotify Connect, Tidal, Deezer, Network Audio Streaming
High resolution DSD (2.8/5.6MHz), FLAC, ALAC and WAV support
Advanced multi-room options; 15.2ch pre-out; RS232 control
13 powerful amplifiers for an ultimate 3D audio performance with Denon sound
Clearer, more powerful sound
Ultimate build-quality for a reference-class audio experience
Enjoy an immersive, three-dimensional audio experience
Provides the highest resolution for music and movies
Complete customised equalisation in your listening room
Provides the greatest picture quality
Connect up to eight of your favourite media devices and output to three displays
Listen from any room of your home
Access to a wide array of unlimited online music sources
High resolution audio streaming for HiFi enthusiasts, even in gapless
Audio and video in multiple rooms; ready for third-party home automation systems